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Finding the Fourth Proportional to 28,353.66, 42,533.97 and 9,636.78

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Solution

The fourth proportional to 28,353.66, 42,533.97 and 9,636.78 is: 14,456.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,353.66 : 42,533.97 = 9,636.78 : x
  2. Step 2: Convert to fraction form
    28,353.66/42,533.97 = 9,636.78/x
  3. Step 3: Cross multiply
    28,353.66x = 42,533.97 × 9,636.78
  4. Step 4: Simplify right side
    28,353.66x = 409,890,511.42
  5. Step 5: Solve for x
    x = 409,890,511.42/28,353.66
  6. Step 6: Final answer
    x = 14,456.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.